-/*
- * JNI interface to virtual machine in Simgrid
- *
- * Copyright (c) 2006-2013. The SimGrid Team.
- * All right reserved.
- *
- * This program is free software; you can redistribute
- * it and/or modify it under the terms of the license
- * (GNU LGPL) which comes with this package.
- */
+/* JNI interface to virtual machine in Simgrid */
+
+/* Copyright (c) 2006-2014. The SimGrid Team.
+ * All rights reserved. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
package org.simgrid.msg;
-import org.simgrid.msg.Host;
-import org.simgrid.msg.Process;
public class VM extends Host{
// Please note that we are not declaring a new bind variable
//(the bind variable has been inherited from the super class Host)
-
+
/* Static functions */
// GetByName is inherited from the super class Host
-
- private static VM[] vms=null;
- private Host currentHost;
+
+ private static VM[] vms=null;
+ private Host currentHost;
/* Constructors / destructors */
- /**
+ /**
* Create a `basic' VM (i.e. 1 core, 1GB of RAM, other values are not taken into account).
*/
public VM(Host host, String name) {
/**
* Create a VM
- * @param host, Host node
- * @param name, name of the machine
- * @param nCore, number of core
- * @param ramSize, size of the RAM that should be allocated (in MBytes)
+ * @param host Host node
+ * @param name name of the machine
+ * @param nCore number of core
+ * @param ramSize size of the RAM that should be allocated (in MBytes)
* @param netCap (not used for the moment)
* @param diskPath (not used for the moment)
* @param diskSize (not used for the moment)
* @param migNetSpeed (network bandwith allocated for migrations in MB/s, if you don't know put zero ;))
* @param dpIntensity (dirty page percentage according to migNetSpeed, [0-100], if you don't know put zero ;))
*/
-
public VM(Host host, String name, int nCore, int ramSize,
int netCap, String diskPath, int diskSize, int migNetSpeed, int dpIntensity){
super();
private static void addVM(VM vm){
VM[] vmsN=null;
- int i=0;
+ int i=0;
if(VM.vms == null)
vmsN = new VM[1];
else
vmsN = new VM[vms.length+1];
-
+
for (i=0; i<vmsN.length-1 ; i ++){
vmsN[i]=vms[i];
}
vmsN[i]=vm;
vms=vmsN;
}
- public static VM[] all(){
+ public static VM[] all(){
return vms;
}
public static VM getVMByName(String name){
for (int i=0 ; i < vms.length ; i++){
- if (vms[i].getName().equals(name))
- return vms[i];
+ if (vms[i].getName().equals(name))
+ return vms[i];
}
return null;
}
protected void finalize() {
destroy();
}
-
+
/* JNI / Native code */
/* get/set property methods are inherited from the Host class. */
-
+
/** Returns whether the given VM is currently suspended
*/
public native int isCreated();
-
+
/** Returns whether the given VM is currently running
*/
public native int isRunning();
/** Returns whether the given VM is currently running
*/
public native int isMigrating();
-
+
/** Returns whether the given VM is currently suspended
*/
public native int isSuspended();
-
+
/** Returns whether the given VM is currently saving
*/
public native int isSaving();
-
+
/** Returns whether the given VM is currently saved
*/
public native int isSaved();
/** Returns whether the given VM is currently restoring its state
*/
public native boolean isRestoring();
-
+
/**
* Natively implemented method create the VM.
- * @param nCore, number of core
- * @param ramSize, size of the RAM that should be allocated (in MB)
+ * @param nCore number of core
+ * @param ramSize size of the RAM that should be allocated (in MB)
* @param netCap (not used for the moment)
* @param diskPath (not used for the moment)
* @param diskSize (not used for the moment)
* @param dpIntensity (dirty page intensity, a percentage of migNetSpeed [0-100], if you don't know put zero ;))
*/
private native void create(Host host, String name, int nCore, int ramSize,
- int netCap, String diskPath, int diskSize, int migNetSpeed, int dpIntensity);
+ int netCap, String diskPath, int diskSize, int migNetSpeed, int dpIntensity);
/**
* Bound the VM to a certain % of its vcpu capability (e.g. 75% of vm.getSpeed())
- * @param load, percentage (between [0,100]
+ * @param load percentage (between [0,100]
*/
public native void setBound(int load);
*/
public native void start();
-
+
/**
* Immediately kills all processes within the given VM. Any memory that they allocated will be leaked.
* No extra delay occurs. If you want to simulate this too, you want to use a MSG_process_sleep() or something
*/
public native void shutdown();
-
+
/**
* Invoke native migration routine
- */
- public native void internalmig(Host destination);
+ */
+ public native void internalmig(Host destination) throws Exception; // TODO add throws DoubleMigrationException (i.e. when you call migrate on a VM that is already migrating);
+
+
-
/** Change the host on which all processes are running
* (pre-copy is implemented)
*/
- public void migrate(Host destination){
- this.internalmig(destination);
+ public void migrate(Host destination) throws HostFailureException{
+ try {
+ this.internalmig(destination);
+ } catch (Exception e){
+ Msg.info("an exception occurs during the migration of VM "+this.getName());
+ throw new HostFailureException();
+ }
+ // If the migration correcly returned, then we should change the currentHost value.
this.currentHost = destination;
}
-
+
/** Immediately suspend the execution of all processes within the given VM
*
* No suspension cost occurs. If you want to simulate this too, you want to
* of VM suspend to you.
*/
public native void suspend();
-
+
/** Immediately resumes the execution of all processes within the given VM
*
* No resume cost occurs. If you want to simulate this too, you want to
* of VM resume to you.
*/
public native void resume();
-
+
/** Immediately suspend the execution of all processes within the given VM
* and save its state on the persistent HDD
* Not yet implemented (for the moment it behaves like suspend)
* of VM suspend to you.
*/
public native void save();
-
+
/** Immediately resumes the execution of all processes previously saved
* within the given VM
* Not yet implemented (for the moment it behaves like resume)
* of VM resume to you.
*/
public native void restore();
-
+
/**
* Destroy the VM
*/
public native void destroy();
-
+
/**
* Class initializer, to initialize various JNI stuff
